三峡库区典型岩溶隧道突涌水灾害防治与应用

发布时间：2018-01-19 19:00

本文关键词： 隧道工程三峡库区典型岩溶隧道突水工程应用　出处：《岩石力学与工程学报》2014年09期 　论文类型：期刊论文

【摘要】：三峡翻坝高速公路沿线水文地质条件极其复杂,岩溶不良地质十分发育,隧道施工突涌水风险极高。为控制突涌水风险,经过大量工程实践,依托三峡翻坝高速公路,提出一套高风险岩溶隧道突涌水防治体系。首先,通过岩溶水文地质调查方法,分析地层岩性、地形、地貌等信息,揭示区域岩溶发育特征和补排通道,并对降雨量、水流流量等数据进行长期观测,确定区域岩溶水的补径排特点;然后,通过分析突水风险孕险环境与致险因子,结合施工工程动态信息,对隧道突水进行动态风险评估,提出并成功实施一种基于隧道施工风险评估的超前地质预报体系;最后,根据综合超前地质预报结果,对突水治理方案进行动态优化设计,确定治理区段与治理方案,并在施工过程中进行开挖、支护和注浆的质量控制。经三峡翻坝高速典型岩溶隧道鸡公岭隧道的应用证明,该体系可有效规避大型突涌水等地质灾害,可为三峡库区和清江流域内其他工程所借鉴,具有广泛的应用前景和工程实用价值。
[Abstract]:The hydrogeological conditions along the three Gorges overturning Dam Expressway are extremely complex, the poor karst geology is well developed, and the risk of sudden water inflow in tunnel construction is extremely high. In order to control the risk of water inrush, a large number of engineering practices have been carried out. Based on the three Gorges overturning Dam Expressway, a set of high risk karst tunnel burst water prevention system is put forward. Firstly, through the method of karst hydrogeological investigation, the information of strata lithology, topography and geomorphology are analyzed. The characteristics of regional karst development and drainage channels are revealed, and long-term observation of rainfall, flow rate and other data are carried out to determine the characteristics of regional karst water drainage. Then, by analyzing the risk of water inrush, risk environment and risk factors, combined with the dynamic information of construction project, the dynamic risk assessment of tunnel water inrush is carried out. An advanced geological prediction system based on tunnel construction risk assessment is proposed and implemented successfully. Finally, according to the comprehensive advance geological forecast results, the dynamic optimization design of water inrush treatment scheme is carried out, the treatment section and treatment plan are determined, and the excavation is carried out during the construction process. Through the application of Jigongling tunnel, a typical karst tunnel in the three Gorges, it is proved that the system can effectively avoid large geological disasters such as sudden water inrush. It can be used for reference by other projects in the three Gorges Reservoir area and the Qingjiang River Basin. It has extensive application prospect and practical value.
【作者单位】：山东大学岩土与结构工程研究中心;南京水利科学研究院港口航道泥沙工程交通行业重点实验室;湖北三峡翻坝高速公路建设指挥部;
【基金】：国家重点基础研究发展计划(973)项目(2013CB036000) 国家自然科学基金重点资助项目(51139004) 南京水利科学研究院港口航道泥沙工程交通行业重点实验室开放基金
【分类号】：U453.61
【正文快照】： 1引言随着交通、水利水电等重大基础设施工程的建设,我国已成为世界上隧道修建规模与难度最大的国家之一。特别是随着重大工程建设重心向地形、地质条件极端复杂的西部山区与岩溶地区转移,正在或即将修建大量的高风险深长隧道工程,建设过程中极易遭遇突水、突泥重大灾害[1-6]

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